Doug / smarc-fsl-linux-kernel

Download as
Browse Code ยป

Commit a64c8610bd3b753c6aff58f51c04cdf0ae478c18

Authored by Theodore Ts'o
1 parent 8e0ee43bc2
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

block_write_full_page: Use synchronous writes for WBC_SYNC_ALL writebacks 

When doing synchronous writes because wbc->sync_mode is set to
WBC_SYNC_ALL, send the write request using WRITE_SYNC, so that we
don't unduly block system calls such as fsync().

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Acked-by: Jan Kara <jack@suse.cz>

Showing 1 changed file with 3 additions and 2 deletions Side-by-side Diff

... ... @@ -1714,6 +1714,7 @@
1714 1714 struct buffer_head *bh, *head;
1715 1715 const unsigned blocksize = 1 << inode->i_blkbits;
1716 1716 int nr_underway = 0;
  1717 + int write_op = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
1717 1718  
1718 1719 BUG_ON(!PageLocked(page));
1719 1720  
... ... @@ -1805,7 +1806,7 @@
1805 1806 do {
1806 1807 struct buffer_head *next = bh->b_this_page;
1807 1808 if (buffer_async_write(bh)) {
1808   - submit_bh(WRITE, bh);
  1809 + submit_bh(write_op, bh);
1809 1810 nr_underway++;
1810 1811 }
1811 1812 bh = next;
... ... @@ -1859,7 +1860,7 @@
1859 1860 struct buffer_head *next = bh->b_this_page;
1860 1861 if (buffer_async_write(bh)) {
1861 1862 clear_buffer_dirty(bh);
1862   - submit_bh(WRITE, bh);
  1863 + submit_bh(write_op, bh);
1863 1864 nr_underway++;
1864 1865 }
1865 1866 bh = next;